They require no treatment and usually fade as the baby grows . hemangiomas known as strawberry birthmarks are also very common . most are small and harmless 这些胎记有的会随着婴儿长大而渐渐消失，而有的会一直留在那里，甚至扩散成疾。
There is no treatment for the irus that was killing millions of people a year as recently as the 1960s and left many more blind and scarred 近在十九世纪六十年代，每年有百万余人死于这种病毒，致盲和留下瘢痕的更多，但目前还没有相应的治疗方法。
There is no treatment for the virus that was killing millions of people a year as recently as the 1960s and left many more blind and scarred 近在十九世纪六十年代，每年有百万余人死于这种病毒，致盲和留下瘢痕的更多，但目前还没有相应的治疗方法。
The 29 subjects in the experiment group were arranged to attend 12 sessions of career counseling curriculum for 12 weeks , and the 31 subjects in the control group received no treatment 本研究之依变项为生涯自我效能及生涯定向二类；自变项则为实验处理。
A half - hour later , they injected half of the mice with a solution containing their heparin - binding amphiphiles , while control animals received either an injection of growth factors alone or no treatment 半小时后，他们在半数的老鼠身上注射了含有肝磷脂双性分子的试剂，在对比老鼠身上注射了生长因子或者没有进行任何处理。
To begin with , most of hong kong s sewage and wastewater ended up in the sea , but the bulk of it had received little or no treatment before discharge due to the lack of a developed sewer network and treatment facilities at that time . this led to rises in organic and inorganic pollutants , a reduction in the oxygen content of the water , and increased bacteria levels 城市的生活污水和工业废水一般均排入大海，但由于当时污水系统及处理设施并不完善，大部分污水只经过初步处理或甚至未经处理便予以排放，导致海水中有机和无机污染物不断增加，含氧量下降和细菌水平上升。
